National Geographic photographer Paul Nicklen is one lucky man. Not only did he get to swim and take photos of a 12-foot leopard seal in the Antarctic (and didn't get eaten), he was actually "adopted" by it!

I slipped into the water, terrified of what might happen, and I swam up to this leopard seal. My legs were shaking and I had dry mouth. Right away she dropped the penguin. She came up to me and she opened her mouth ... and her head is twice as wide as a grizzly bear's head. She's huge. She took my whole head and my camera inside her head and did this threat display.

But then the most remarkable thing happen. She went off and got me a live penguin. She came up and she started to feed me a penguin. She kept letting these live penguins go and the penguin would shoot past me and she'd look disgusted as she go by me. She did this over and over.

And then I think she realized that I was this useless predator in her ocean, probably going to starve to death and I think she became quite panicked and she got me weak penguins then dead penguins ...